TY - CONF
AB - A model to calculate the locally resolved tangential contact forces of the wheel rail contact with respect to contact kinematics, material and surface properties as well as temperature is introduced. The elasticity of wheel and rail is modeled as an elastic layer consisting of point contact elements connected by springs to each other and to the wheel. Each element has two degrees of freedom in tangential directions. The resulting total stiffness matrix is reduced to calculate only the position of the elements in contact. Friction forces as well as contact stiffnesses are incorporated by a nonlinear force-displacement characteristic, which originates from a detailed contact model. The contact elements are transported through the contact zone in discrete time steps. After each time step an equilibrium is calculated. For all elements, their temperature and its influence on local friction are regarded by calculating friction power and temperature each time step.
AU - Neuhaus, Jan
AU - Sextro, Walter
ED - Liu, G.R.
ED - Guan, Z.W.
ID - 9887
KW - Rolling Contact
KW - Discrete Elements
KW - Contact Stiffness
KW - Temperature
T2 - Proceedings of the 5th International Conference on Computational Methods
TI - Thermo-Mechanical Model for Wheel Rail Contact using Coupled Point Contact Elements
ER -